If you have enough time, come to Zhengzhou, check online first, then chat with customer service, spend a day reading everything, and then find a quiet place to discuss before making a decision. Many of my clients are from other parts of the province, as well as from outside the province and as far away as Qinghai.
Don't look at the sample film when you watch it, just tell the receptionist that I want to see the guest film, and then see if the clothing style suits me. In order to avoid wrangling later, many agreements should also be written on the reservation list.